Phase averaged pulse width modulator
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United States of America Patent
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Jun 25, 2013
Grant Date -
Jun 13, 2013
app pub date -
Dec 12, 2011
filing date -
Dec 12, 2011
priority date (Note) -
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Abstract
A method is provided. A noise shaped signal having a plurality of instants is generated with each instant being associated with at least one of a plurality of output levels. A next phase is selected for each instant, where each next phase is a circularly shifted phase based at least in part on a previous phase for the associated output level for its instant. A plurality of PWM signals is then generated using the phase for each instant, and an amplified signal is generated from the plurality of PWM signals.
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